if(localStorage && localStorage.getItem('viewType') == 'list')
  $('#filesDisplay').addClass('list-view')

function uploadFileFromButton() {
  var form = $('#uploadFilesButtonForm')[0];
  var dirValue = $('#dir').val();
  var formData = new FormData();

  // Append other form data
  formData.append('csrf_token', $(form).find('input[name="csrf_token"]').val());
  formData.append('from_button', $(form).find('input[name="from_button"]').val());
  formData.append('dir', dirValue);

  uploadFilesCount = 0
  // Append files with modified filenames
  $.each($('#uploadFiles')[0].files, function(i, file) {
    var modifiedFileName = dirValue + '/' + file.name;
    formData.append(modifiedFileName, file);
    uploadFilesCount++;
  });

  alertClear();

  $.ajax({
    url: '/api/upload',
    type: 'POST',
    data: formData,
    contentType: false, // This is required for FormData
    processData: false, // This is required for FormData
    success: function(data) {
      alertType('success');
      alertAdd(uploadFilesCount+' files uploaded successfully.');
      reloadDashboardFiles();
    },
    error: function(xhr, status, error) {
      var responseBody = JSON.parse(xhr.responseText);
      alertType('error');
      alertAdd(responseBody.message);
      reloadDashboardFiles();
    }
  });
}

$('#uploadFiles').change(function() {
  $('#uploadFilesButtonForm').submit();
});

var uploadForm = $('#uploadFilesButtonForm')[0];
var deleteForm = $('#deleteFilenameForm')[0];

function moveFileToFolder(event) {
  var link = event.dataTransfer.getData("Text");
  if(link) link = link.trim();
  if(!link || link.startsWith('https://neocities.org/dashboard')) return;
  event.preventDefault();
  var name = link.split('.neocities.org/').slice(1).join('.neocities.org/');
  var oReq = new XMLHttpRequest();
  oReq.open("GET", "/site_files/download/" + name, true);
  oReq.responseType = "arraybuffer";

  $('#movingOverlay').css('display', 'block')

  oReq.onload = function() {
    var newFile = new File([oReq.response], name);
    var dataTransfer = new DataTransfer();
    var currentFolder = new URL(location.href).searchParams.get('dir');
    if(!currentFolder) currentFolder = '';
    else currentFolder = currentFolder + '/';

    dataTransfer.items.add(newFile);
    $('#uploadFilesButtonForm > input[name="dir"]')[0].value = currentFolder + event.target.parentElement.parentElement.getElementsByClassName('title')[0].innerText.trim();
    $('#uploadFiles')[0].files = dataTransfer.files;
    $.ajax({
      type: uploadForm.method,
      url: uploadForm.action,
      data: new FormData(uploadForm),
      processData: false,
      contentType: false,
      success: function() {
        let csrf = $('#uploadFilesButtonForm > input[name="csrf_token"]')[0].value;
        var dReq = new XMLHttpRequest();
        dReq.open(deleteForm.method, deleteForm.action, true);
        dReq.onload = function() {
          location.reload()
        }
        dReq.setRequestHeader("content-type", 'application/x-www-form-urlencoded');
        dReq.send("csrf_token=" + encodeURIComponent(csrf) + "&filename=" + name.replace(/\s/g, '+'));
      },
      error: function() {
        location.reload()
      }
    });
  };
  oReq.send();
}

function confirmFileRename(path) {
  $('#renamePathInput').val(path);
  $('#renameNewPathInput').val(path);
  $('#renameModal').modal();
}

function confirmFileDelete(name) {
  $('#deleteFileName').text(name);
  $('#deleteConfirmModal').modal();
}

function fileDelete() {
  $('#deleteFilenameInput').val($('#deleteFileName').html());
  $('#deleteFilenameForm').submit();
}

function clickUploadFiles() {
  $("input[id='uploadFiles']").click()
}

function showUploadProgress() {
  $('#uploadingOverlay').css('display', 'block')
}

function hideUploadProgress() {
  $('#progressBar').css('display', 'none')
  $('#uploadingOverlay').css('display', 'none')
}

allUploadsComplete = false

$('#createDir').on('shown', function () {
  $('#newDirInput').focus();
})

$('#createFile').on('shown', function () {
  $('#newFileInput').focus();
})

function listView() {
  if(localStorage)
    localStorage.setItem('viewType', 'list')

  $('#filesDisplay').addClass('list-view')
}

function iconView() {
  if(localStorage)
    localStorage.removeItem('viewType')

  $('#filesDisplay').removeClass('list-view')
}

// Drop handler function to get all files
async function getAllFileEntries(dataTransferItemList) {
  let fileEntries = [];
  // Use BFS to traverse entire directory/file structure
  let queue = [];
  for (let i = 0; i < dataTransferItemList.length; i++) {
    queue.push(dataTransferItemList[i].webkitGetAsEntry());
  }
  while (queue.length > 0) {
    let entry = queue.shift();
    if (entry.isFile) {
      fileEntries.push(entry);
    } else if (entry.isDirectory) {
      let reader = entry.createReader();
      queue.push(...await readAllDirectoryEntries(reader));
    }
  }
  return fileEntries;
}

// Get all the entries (files or sub-directories) in a directory
async function readAllDirectoryEntries(directoryReader) {
  let entries = [];
  let readEntries = await readEntriesPromise(directoryReader);
  while (readEntries.length > 0) {
    entries.push(...readEntries);
    readEntries = await readEntriesPromise(directoryReader);
  }
  return entries;
}

// Wrap readEntries in a promise
async function readEntriesPromise(directoryReader) {
  try {
    return await new Promise((resolve, reject) => {
      directoryReader.readEntries(resolve, reject);
    });
  } catch (err) {
    console.log(err);
  }
}

async function uploadFile(file, dir, additionalFormData) {
  const formData = new FormData();

  // Append additional form data (from other input fields) to each file's FormData
  for (const [key, value] of Object.entries(additionalFormData)) {
    formData.append(key, value);
  }

  var modifiedFileName;

  if (file.webkitRelativePath === '') {
    modifiedFileName = file.name;
  } else {
    modifiedFileName = file.webkitRelativePath;
  }

  if (dir && dir !== '/') {
    modifiedFileName = dir.replace(/^\//, '') + '/' + modifiedFileName;
  }

  modifiedFileName = modifiedFileName.replace(/^\//, '');

  console.log('modifiedFileName: '+modifiedFileName)
  formData.append(modifiedFileName, file, modifiedFileName);

  $('#uploadFileName').text(modifiedFileName).prepend('<i class="icon-file"></i> ');

  // Send the FormData with the file and additional data
  try {
    const response = await fetch('/api/upload', {
      method: 'POST',
      body: formData,
    });
    const result = await response.json();

    if (result.result == 'error') {
      fileUploadErrorCount++;
      if(fileUploadErrorCount == 1) {
        alertType('error');
      }
      alertAdd(result.message);
    } else {
      fileUploadSuccessCount++;
    }
  } catch (err) {
  }
}

async function processEntry(entry, dir, additionalFormData) {
  await new Promise((resolve) => {
    entry.file((file) => {
      uploadFile(file, dir, additionalFormData).then(resolve);
    });
  });
}

async function uploadFiles(fileEntries) {
  alertClear();

  // Collect additional form data
  const form = document.getElementById('dropzone');
  let additionalFormData = {};
  for (let i = 0; i < form.elements.length; i++) {
    const input = form.elements[i];
    if (input.name && input.type !== "file") { // Avoid file inputs
      additionalFormData[input.name] = input.value;
    }
  }
  
  const dir = additionalFormData['dir'] || '';

  var totalFiles = fileEntries.length;
  $('#progressBar').css('display', 'block')

  fileUploadCount = 0
  fileUploadErrorCount = 0
  fileUploadSuccessCount = 0

  for (let entry of fileEntries) {
    await processEntry(entry, dir, additionalFormData);
    fileUploadCount++;
    var progress = (fileUploadCount / totalFiles) * 100;
    $('#uploadingProgress').css('width', progress+'%');
  }

  allUploadsComplete = true

  if(fileUploadErrorCount > 0) {
    alertAdd(fileUploadSuccessCount+'/'+fileUploadCount+' files uploaded successfully.');
  } else {
    alertType('success')
    alertAdd(fileUploadSuccessCount+' files uploaded successfully.');
  }

  reloadDashboardFiles();
}

function reInitDashboardFiles() {
  var elDrop = document.getElementById('dropzone');

  elDrop.addEventListener('dragover', function (event) {
    event.preventDefault();
  });
  
  elDrop.addEventListener('drop', async function (event) {
    event.preventDefault();
    showUploadProgress();
    let items = await getAllFileEntries(event.dataTransfer.items);
    await uploadFiles(items);
  });
}

function reloadDashboardFiles() {
  $.get('/dashboard/files?dir='+encodeURIComponent($("#dir").val()), function(data) {
    $('#filesDisplay').html(data);
    reInitDashboardFiles();
  });
}

function alertAdd(text) {
  var a = $('#alertDialogue');
  a.css('display', 'block');
  a.append(text+'<br>');
}

function alertClear(){
  var a = $('#alertDialogue');
  a.css('display', 'none');
  a.text('');
}

function alertType(type){
  var a = $('#alertDialogue');
  a.removeClass('alert-success');
  a.removeClass('alert-error');
  a.addClass('alert-'+type);
}

// for first time load
reInitDashboardFiles();